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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Westfield Water Department

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

101

Samples

0

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND70ND
20150.116 ppb132ND - 1.000 ppb
20160.305 ppb207ND - 1.90 ppb
20170.480 ppb228ND - 2.90 ppb
20180.411 ppb184ND - 2.40 ppb
20190.210 ppb214ND - 1.68 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Result
2014-08-15ND
2014-08-15ND
2014-08-15ND
2014-08-15ND
2014-08-15ND
2014-08-15ND
2014-08-15ND
2015-03-121.000 ppb
2015-06-02ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-200.510 ppb
2015-11-20ND
2015-11-20ND
2016-02-24ND
2016-02-240.900 ppb
2016-05-25ND
2016-05-250.800 ppb
2016-08-23ND
2016-08-23ND
2016-08-23ND
2016-08-23ND
2016-08-23ND
2016-08-23ND
2016-08-23ND
2016-08-23ND
2016-09-280.600 ppb
2016-09-28ND
2016-09-280.600 ppb
2016-09-280.600 ppb
2016-11-301.90 ppb
2016-11-30ND
2016-11-30ND
2016-11-300.700 ppb
2017-03-221.30 ppb
2017-03-22ND
2017-03-220.600 ppb
2017-03-22ND
2017-05-241.90 ppb
2017-05-240.500 ppb
2017-05-24ND
2017-05-24ND
2017-08-232.90 ppb
2017-08-231.70 ppb
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-08-230.680 ppb
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-08-23ND
2017-11-160.980 ppb
2017-11-16ND
2017-11-16ND
2017-11-16ND
2018-05-142.40 ppb
2018-05-140.900 ppb
2018-05-14ND
2018-05-14ND
2018-08-29ND
2018-08-29ND
2018-08-29ND
2018-08-29ND
2018-08-29ND
2018-08-29ND
2018-08-29ND
2018-08-29ND
2018-08-29ND
2018-11-151.90 ppb
2018-11-15ND
2018-11-192.20 ppb
2018-11-19ND
2018-12-20ND
2019-02-14ND
2019-02-14ND
2019-02-14ND
2019-02-14ND
2019-05-15ND
2019-05-150.700 ppb
2019-05-15ND
2019-05-15ND
2019-08-15ND
2019-08-15ND
2019-08-15ND
2019-08-150.890 ppb
2019-08-15ND
2019-08-15ND
2019-08-15ND
2019-08-15ND
2019-08-15ND
2019-11-131.68 ppb
2019-11-131.14 ppb
2019-11-13ND
2019-11-14ND